New to me SRS 2s

Over the last 3 days I've added three new sets of polks, a pair of SRS 1.2TLs, SRS 2s, and Monitor 5JR series 2s

This thread is for the SRS 2s and their associated project.

https://imgur.com/a/sqNzhSq

Both pairs of SRSs were from the same seller, the TLs are in perfect shape but SRS 2s.....not so much.

Someone has been in both before (owner claims he did but his neighbor may have in the early 2000s, he doesn't remember) and unfortunately while I did get a set of 4 RD0-194s out of it I also have an unknown driver (with coil rub) in the left channel stereo array lower position, a MW6510 in the same position on the right channel, a replaced MW6511 above that driver, and a dead MW155 on the right channel. The right crossover also has a blown component that I think is the poly switch, left terminal plate has a snapped post and there is one stripped thread hole on the right cabinet as well.

Cabinets other than the striped thread are in otherwise good shape, I have two small cracks between the boards on the top plates but that's it. Grills etc are all perfect

I'm going to be upgrading these fully with all the usual mods and VR3 crossovers, I will also likely replace all drivers with the set out of my original SDA1c set because I know those are all perfect and have never been overdriven.

Not sure what I'm going to do about the MW155 though, that's the most major issue I'm dealing with
2 channel: MXN10, Anthem MRX740, Anthem MCA5, SDA1c recap/RDO, JL Fathom F112V2, Tributaries series 8A, Tara labs RSC

Theater: Above plus Paradigm reference studio 100, Polk FX300i

Projects: SRS1.2TL, SRS 2, M5Jr+

Party/1st floor: iPad, Marantz SR5005, Paradigm reference S100v2, monster bulk cable

B&O H9 Gen3
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Comments

  • audioluvr
    audioluvr Posts: 5,861
    It's a sickness you know. We should have a support group called "Polk Audio Collectors Anonymous".
    Gustard X26 Pro DAC
    Belles 21A Pre modded with Mundorf Supreme caps
    B&K M200 Sonata monoblocks refreshed and upgraded
    Polk SDA 1C's modded / 1000Va Dreadnaught
    Wireworld Silver Eclipse IC's and speaker cables
    Harman Kardon T65C w/Grado Gold. (Don't laugh. It sounds great!)


    There is about a 5% genetic difference between apes and men …but that difference is the difference between throwing your own poo when you are annoyed …and Einstein, Shakespeare and Miss January. by Dr. Sardonicus
  • pitdogg2
    pitdogg2 Posts: 26,915
    MW155? Passive?
  • Striker2237
    Striker2237 Posts: 115
    edited November 9
    pitdogg2 wrote: »
    MW155? Passive?

    Yep. I'm kinda depressed about it tbh, that was the one thing I don't have spares for

    Stuff in the pictures with painters tape on them are wrong/broken, flat tape is broken, ribbon is wrong item
    2 channel: MXN10, Anthem MRX740, Anthem MCA5, SDA1c recap/RDO, JL Fathom F112V2, Tributaries series 8A, Tara labs RSC

    Theater: Above plus Paradigm reference studio 100, Polk FX300i

    Projects: SRS1.2TL, SRS 2, M5Jr+

    Party/1st floor: iPad, Marantz SR5005, Paradigm reference S100v2, monster bulk cable

    B&O H9 Gen3
  • Gardenstater
    Gardenstater Posts: 4,719
    Oof that imgur is annoying :D

    You can just drag and drop your pictures into your forum post and they will be there as long as the forum lives.
    George / NJ

    Polk 7B main speakers, std. mods+ (1979, orig owner)
    Martin Logan Dynamo sub w/6ft 14awg Power Cord
    Onkyo A-8017 integrated
    Logitech Squeezebox Touch Streamer w/EDO applet
    iFi nano iDSD DAC
    iPurifier3
    iDefender w/ iPower PS
    Custom Steve Wilson 1m UPOCC Interconnect
    iFi Mercury 0.5m OFHC continuous cast copper USB cable
    Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
    Custom Vibration Isolation Speaker Stands and Sub Platform
  • Striker2237
    Striker2237 Posts: 115
    Oof that imgur is annoying :D

    You can just drag and drop your pictures into your forum post and they will be there as long as the forum lives.

    Oh. I didn't know that, forum seemed like it wanted external hosting sorry
    2 channel: MXN10, Anthem MRX740, Anthem MCA5, SDA1c recap/RDO, JL Fathom F112V2, Tributaries series 8A, Tara labs RSC

    Theater: Above plus Paradigm reference studio 100, Polk FX300i

    Projects: SRS1.2TL, SRS 2, M5Jr+

    Party/1st floor: iPad, Marantz SR5005, Paradigm reference S100v2, monster bulk cable

    B&O H9 Gen3
  • F1nut
    F1nut Posts: 51,655
    SW155, not MW155. Good luck finding one.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."


    President of Club Polk

  • Striker2237
    Striker2237 Posts: 115
    edited November 9
    F1nut wrote: »
    SW155, not MW155. Good luck finding one.

    Whoops, my bad. Hit the wrong key clearly....

    If anyone is selling one or more I'll pay top dollar for spares lol! I need at least one replacement for these to work at all since I doubt I can fix this one

    I've gotten lucky once before with MW6500s, hopefully I can do it again
    2 channel: MXN10, Anthem MRX740, Anthem MCA5, SDA1c recap/RDO, JL Fathom F112V2, Tributaries series 8A, Tara labs RSC

    Theater: Above plus Paradigm reference studio 100, Polk FX300i

    Projects: SRS1.2TL, SRS 2, M5Jr+

    Party/1st floor: iPad, Marantz SR5005, Paradigm reference S100v2, monster bulk cable

    B&O H9 Gen3
  • F1nut
    F1nut Posts: 51,655
    What is wrong with it?
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."


    President of Club Polk

  • Striker2237
    Striker2237 Posts: 115
    edited November 9
    F1nut wrote: »
    What is wrong with it?

    Bunch of issues, pictures show it as best I could capture but the suspension is torn, styrofoam cone is detached from the flat diaphragm, foam is flaking at the edges and at the center "post" where it meets the suspension as well as being melted looking.

    External items and the basket are all fine but the internals are dead

    2 channel: MXN10, Anthem MRX740, Anthem MCA5, SDA1c recap/RDO, JL Fathom F112V2, Tributaries series 8A, Tara labs RSC

    Theater: Above plus Paradigm reference studio 100, Polk FX300i

    Projects: SRS1.2TL, SRS 2, M5Jr+

    Party/1st floor: iPad, Marantz SR5005, Paradigm reference S100v2, monster bulk cable

    B&O H9 Gen3
  • pitdogg2
    pitdogg2 Posts: 26,915
    edited November 9
    If anyone is selling one or more I'll pay top dollar for spares lol!
    As rare as hens teeth AND you WILL pay TOP dollar. Very very few come up for sale on ebay, when they do, they go for hundreds of dollars.
    Whatever glue they tried to use melted the foam.
    This is your huckleberry.
    https://aleenes.com/collections/original-tacky-glue/products/aleenes-original-tacky-glue-4-fl-oz
    Best to coat both surfaces and allow to set up just a bit then press together wipe up excess with damp cloth.
  • Striker2237
    Striker2237 Posts: 115
    edited November 9
    100s is fine to me as long as I can get one lol!

    My escapades with these SDAs have been hugely beneficial to me NOT spending money on crazy high dollar speakers. I always listen to my standard tracks at home before going to test anything and every time the "lowly" 1Cs win or make me question "why are these $20k-50k again?" when I'm trying something new.

    The only stuff I've heard that is definitely better is $85k+ and that would require me to ditch my car habit lol!
    2 channel: MXN10, Anthem MRX740, Anthem MCA5, SDA1c recap/RDO, JL Fathom F112V2, Tributaries series 8A, Tara labs RSC

    Theater: Above plus Paradigm reference studio 100, Polk FX300i

    Projects: SRS1.2TL, SRS 2, M5Jr+

    Party/1st floor: iPad, Marantz SR5005, Paradigm reference S100v2, monster bulk cable

    B&O H9 Gen3
  • Striker2237
    Striker2237 Posts: 115
    pitdogg2 wrote: »
    If anyone is selling one or more I'll pay top dollar for spares lol!
    As rare as hens teeth AND you WILL pay TOP dollar. Very very few come up for sale on ebay, when they do, they go for hundreds of dollars.
    Whatever glue they tried to use melted the foam.
    This is your huckleberry.
    https://aleenes.com/collections/original-tacky-glue/products/aleenes-original-tacky-glue-4-fl-oz
    Best to coat both surfaces and allow to set up just a bit then press together wipe up excess with damp cloth.

    What do you suggest I do in regards to the dead/melted foam at the suspension? Should I try and precision cut some styrofoam to fill the gap or something?
    2 channel: MXN10, Anthem MRX740, Anthem MCA5, SDA1c recap/RDO, JL Fathom F112V2, Tributaries series 8A, Tara labs RSC

    Theater: Above plus Paradigm reference studio 100, Polk FX300i

    Projects: SRS1.2TL, SRS 2, M5Jr+

    Party/1st floor: iPad, Marantz SR5005, Paradigm reference S100v2, monster bulk cable

    B&O H9 Gen3
  • pitdogg2
    pitdogg2 Posts: 26,915
    At this point in the game you take ANY of the 15" passives from any of the speakers that used them.

    I have no recommendations for the fix.
  • Gardenstater
    Gardenstater Posts: 4,719
    Post a picture in the forum of the damage to the passive. I can't see anything but a little narrow window because of all the advertisements blocking your photos on that imgur.
    George / NJ

    Polk 7B main speakers, std. mods+ (1979, orig owner)
    Martin Logan Dynamo sub w/6ft 14awg Power Cord
    Onkyo A-8017 integrated
    Logitech Squeezebox Touch Streamer w/EDO applet
    iFi nano iDSD DAC
    iPurifier3
    iDefender w/ iPower PS
    Custom Steve Wilson 1m UPOCC Interconnect
    iFi Mercury 0.5m OFHC continuous cast copper USB cable
    Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
    Custom Vibration Isolation Speaker Stands and Sub Platform
  • Striker2237
    Striker2237 Posts: 115
    z35phf3u44zy.jpeg
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    wxawaxvsuwv1.jpeg
    2 channel: MXN10, Anthem MRX740, Anthem MCA5, SDA1c recap/RDO, JL Fathom F112V2, Tributaries series 8A, Tara labs RSC

    Theater: Above plus Paradigm reference studio 100, Polk FX300i

    Projects: SRS1.2TL, SRS 2, M5Jr+

    Party/1st floor: iPad, Marantz SR5005, Paradigm reference S100v2, monster bulk cable

    B&O H9 Gen3
  • Gardenstater
    Gardenstater Posts: 4,719
    edited November 9
    Photos of the front as well?

    What is the condition of the butyl rubber surround and the spider? Is there adhesive separation at those attachment points?

    How does the passive move when you exercise it with your hands? Does it move freely?

    I see the solvent melted foam. That carriage bolt glued into the foam is the tuning weight for the passive.

    Is the weight still centered in the basket opening and does it look cocked? How about the front of the passive? Surround evenly convoluted all around?

    George / NJ

    Polk 7B main speakers, std. mods+ (1979, orig owner)
    Martin Logan Dynamo sub w/6ft 14awg Power Cord
    Onkyo A-8017 integrated
    Logitech Squeezebox Touch Streamer w/EDO applet
    iFi nano iDSD DAC
    iPurifier3
    iDefender w/ iPower PS
    Custom Steve Wilson 1m UPOCC Interconnect
    iFi Mercury 0.5m OFHC continuous cast copper USB cable
    Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
    Custom Vibration Isolation Speaker Stands and Sub Platform
  • F1nut
    F1nut Posts: 51,655
    edited November 9
    That's interesting.

    I'd leave the plug area alone. The Aleenes suggestion is solid. Another option would be non-RTV silicone.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."


    President of Club Polk

  • Photos of the front as well?

    What is the condition of the butyl rubber surround and the spider? Is there adhesive separation at those attachment points?

    How does the passive move when you exercise it with your hands? Does it move freely?

    I see the solvent melted foam. That carriage bolt glued into the foam is the tuning weight for the passive.

    Is the weight still centered in the basket opening and does it look cocked? How about the front of the passive? Surround evenly convoluted all around?

    Passive moves "fine" but the foam is detached so I can't move it without hearing a slight rub. That's what had me suspecting something was wrong in the first place.

    Front looks perfect, surround is perfect, spider looks like it's totally fine other than right at the center where it's barely touching the foam pillar with the bolt.

    Bolt is still centered and everything still moves, I can pick up the foam/bolt by hand and lift the whole foam cone off the radiator and it remains centered/attached with the suspension


    nnc9iy5tusv4.jpeg
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    2 channel: MXN10, Anthem MRX740, Anthem MCA5, SDA1c recap/RDO, JL Fathom F112V2, Tributaries series 8A, Tara labs RSC

    Theater: Above plus Paradigm reference studio 100, Polk FX300i

    Projects: SRS1.2TL, SRS 2, M5Jr+

    Party/1st floor: iPad, Marantz SR5005, Paradigm reference S100v2, monster bulk cable

    B&O H9 Gen3
  • Now that I know I can direct upload to the forum I'm going to use this post to add all the same pictures I linked to in the first post.

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    2 channel: MXN10, Anthem MRX740, Anthem MCA5, SDA1c recap/RDO, JL Fathom F112V2, Tributaries series 8A, Tara labs RSC

    Theater: Above plus Paradigm reference studio 100, Polk FX300i

    Projects: SRS1.2TL, SRS 2, M5Jr+

    Party/1st floor: iPad, Marantz SR5005, Paradigm reference S100v2, monster bulk cable

    B&O H9 Gen3
  • Gardenstater
    Gardenstater Posts: 4,719
    edited November 10
    Apparently someone used an incorrect adhesive to repair a loose attachment and over time the adhesive has outgassed solvent that melted the styrofoam. Captain obvious I know, but it is what it is. This is what grok had to say and gives some recommended adhesives for you to verify suitability, like 3M 1300L Fastbond (may be misinformation - solvent based!). Aleenes Tacky Glue is probably a good one too, at least it was mentioned by others in the past, not just in this thread.

    https://grok.com/share/c2hhcmQtNA==_ad223440-dc6a-4316-bd72-8061da77e5d6
    Post edited by Gardenstater on
    George / NJ

    Polk 7B main speakers, std. mods+ (1979, orig owner)
    Martin Logan Dynamo sub w/6ft 14awg Power Cord
    Onkyo A-8017 integrated
    Logitech Squeezebox Touch Streamer w/EDO applet
    iFi nano iDSD DAC
    iPurifier3
    iDefender w/ iPower PS
    Custom Steve Wilson 1m UPOCC Interconnect
    iFi Mercury 0.5m OFHC continuous cast copper USB cable
    Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
    Custom Vibration Isolation Speaker Stands and Sub Platform
  • skipshot12
    skipshot12 Posts: 1,772
    I had an issue with my SDA SRS's one passive, the spider had separated from the cone.
    Cant remember who it was but they recommended the proper adhesive for the repair.
    I was able to do the repair myself and the passive is back to operating like new.
  • audioluvr
    audioluvr Posts: 5,861
    edited November 10
    You have corrosion on the exposed wires coming off the inductors possibly from the adhesives corrosive properties?

    zjd5tegzisxq.png
    Gustard X26 Pro DAC
    Belles 21A Pre modded with Mundorf Supreme caps
    B&K M200 Sonata monoblocks refreshed and upgraded
    Polk SDA 1C's modded / 1000Va Dreadnaught
    Wireworld Silver Eclipse IC's and speaker cables
    Harman Kardon T65C w/Grado Gold. (Don't laugh. It sounds great!)


    There is about a 5% genetic difference between apes and men …but that difference is the difference between throwing your own poo when you are annoyed …and Einstein, Shakespeare and Miss January. by Dr. Sardonicus
  • No idea, that board has a blown poly switch as well as that corrosion.

    I'm not using them anyway but I took pictures to share/document what I pulled out of the speakers
    2 channel: MXN10, Anthem MRX740, Anthem MCA5, SDA1c recap/RDO, JL Fathom F112V2, Tributaries series 8A, Tara labs RSC

    Theater: Above plus Paradigm reference studio 100, Polk FX300i

    Projects: SRS1.2TL, SRS 2, M5Jr+

    Party/1st floor: iPad, Marantz SR5005, Paradigm reference S100v2, monster bulk cable

    B&O H9 Gen3
  • Gardenstater
    Gardenstater Posts: 4,719
    That blue (20uf?) cap got hot enough to wilt back the heatshrink wrap on it. Maybe those inductor wires got hot too at the higher resistance solder pad area.
    George / NJ

    Polk 7B main speakers, std. mods+ (1979, orig owner)
    Martin Logan Dynamo sub w/6ft 14awg Power Cord
    Onkyo A-8017 integrated
    Logitech Squeezebox Touch Streamer w/EDO applet
    iFi nano iDSD DAC
    iPurifier3
    iDefender w/ iPower PS
    Custom Steve Wilson 1m UPOCC Interconnect
    iFi Mercury 0.5m OFHC continuous cast copper USB cable
    Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
    Custom Vibration Isolation Speaker Stands and Sub Platform
  • Striker2237
    Striker2237 Posts: 115
    edited November 14
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    Got my shipment of drivers in, I got a big chuckle that my "new" marked MW6511s have dynamat pre-applied already. Really reflects well on their last owner
    2 channel: MXN10, Anthem MRX740, Anthem MCA5, SDA1c recap/RDO, JL Fathom F112V2, Tributaries series 8A, Tara labs RSC

    Theater: Above plus Paradigm reference studio 100, Polk FX300i

    Projects: SRS1.2TL, SRS 2, M5Jr+

    Party/1st floor: iPad, Marantz SR5005, Paradigm reference S100v2, monster bulk cable

    B&O H9 Gen3
  • Tony M
    Tony M Posts: 11,566
    edited November 14
    And it looks like the magnets are glued too. :)
    Most people just listen to music and watch movies. I EXPERIENCE them.

    “Anger is an acid that can do more harm to the vessel in which it is stored than to anything on which it is poured.”
    --Mark Twain.

    “If at first you don't succeed, then skydiving definitely isn't for you.” - Steven Wright
  • Gardenstater
    Gardenstater Posts: 4,719
    I wonder if they might've been DarqueKnight's. Are all the terminal tabs bent out away from obstructing the basket window? That is a good potential tweak in my opinion and I've never seen any MW straight from the factory that way. A little less reflection back at the cone and better breathing no matter how slight.
    George / NJ

    Polk 7B main speakers, std. mods+ (1979, orig owner)
    Martin Logan Dynamo sub w/6ft 14awg Power Cord
    Onkyo A-8017 integrated
    Logitech Squeezebox Touch Streamer w/EDO applet
    iFi nano iDSD DAC
    iPurifier3
    iDefender w/ iPower PS
    Custom Steve Wilson 1m UPOCC Interconnect
    iFi Mercury 0.5m OFHC continuous cast copper USB cable
    Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
    Custom Vibration Isolation Speaker Stands and Sub Platform
  • I wonder if they might've been DarqueKnight's. Are all the terminal tabs bent out away from obstructing the basket window? That is a good potential tweak in my opinion and I've never seen any MW straight from the factory that way. A little less reflection back at the cone and better breathing no matter how slight.

    They are indeed, I also have his 1000VA dreadnoughts as well. I'm am going to get one of them engraved with a similar message as the custom plate on VR3s CRSs
    2 channel: MXN10, Anthem MRX740, Anthem MCA5, SDA1c recap/RDO, JL Fathom F112V2, Tributaries series 8A, Tara labs RSC

    Theater: Above plus Paradigm reference studio 100, Polk FX300i

    Projects: SRS1.2TL, SRS 2, M5Jr+

    Party/1st floor: iPad, Marantz SR5005, Paradigm reference S100v2, monster bulk cable

    B&O H9 Gen3
  • km19a1ptmaa1.jpeg
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    Still running a pair of 1Cs as mains but I picked up a mint Anthem A5 to swap out the MCA I was using. The increased damping factor massively cleaned up my bass response, I figured it would help but I actually was able to hear new things with the reduction of noise at the wrong times.
    2 channel: MXN10, Anthem MRX740, Anthem MCA5, SDA1c recap/RDO, JL Fathom F112V2, Tributaries series 8A, Tara labs RSC

    Theater: Above plus Paradigm reference studio 100, Polk FX300i

    Projects: SRS1.2TL, SRS 2, M5Jr+

    Party/1st floor: iPad, Marantz SR5005, Paradigm reference S100v2, monster bulk cable

    B&O H9 Gen3